Type-writer.



No. 644,502. Patented Feb. 27,1900.

' W'. S; CRAIG.

TYPE WRITER.

(Application filed Jzily 27, 1898.) (No Model.)

m: woams PflERS wurnoTa-uma, WASHINGYON, n. c

Nrran STATES Farce,

IVILLIAM S. CRAIG, OF LONDON, ENGLAND, ASSIGNOR OF ONE-IIALF TO CHARLESCHASE IVIIITACRE, OF SAME PLACE.

TYPE-WRITER.

SPECIFICATION forming part of Letters Patent No. 644,502, dated February27, 1900.

Application filed July 27,1898.

To (0% whomit may concern/.-

Be it known that I, WILLIAM S. CRAIG, e11- gineer, a citizen of theUnited States, residing in London, England, have invented certain newand useful Improvements in and Connected with Type-VVriters, of whichthe following is a specification.

This invention relates to improvements in and connected withtype-writers, and has reference more particularly to an arrangementwhereby the paper-roller can be adjusted longitudinally with very greataccuracy in or relatively to its carriage or frame to bring anyparticular pointsay, for example, an erased le'tterinto the exactposition for printing.

According to the said invention, while the roller is provided with theordinary knobs or heads for rotating it, one end of its spindle ismounted in an adjustable hearing or sleeve, which bearing forms theessential part of the adjusting device and is provided with means forimparting to it and from it to the roller the requisite fine degree ofmovement. For the purpose of giving the required adjustment the bearingis screw-threaded and works in a fixed nut or block on theroller-carriage.

In order that the invention may be clearly understood, I will proceed todescribe, the same fully by aid of the accompanying drawings, in which-Figure 1 is a diagrammatic plan showing the paper-roller and thecarriage provided with the adjusting device. Fig. 2 is an enlarged viewof the said device, partly in section.

In the drawings the letter A is the paperroller, B is its carriage, andO O are the ordinary knobs or heads for rotating the roller.

01 is the adjustable hearing, which is externally screw-threaded and hasa head I) for rotating it. The said bearing is free to turn relativelyto the spindle B of the roller, so that its rotation does not impart anyrotary motion, but only longitudinal movement to the latter.

c is the nut or block in which the bearing a is mounted and which issecured to the end of the roller-carriage.

It will be seen that the bearing a forms an Serial No. 687,030. (Nomodel.)

accurate fit between the roller A and the adjacent knob O, as anylooseness or play at this part would interfere with the adjustment. Atthe opposite end of the carriage, however, the spindle of the roller canslide through its bearing. By this arrangement it will be seen that theposition of the roller in the carriage can be adjusted longitudinallysimply by turning the head b of the bearing a. The extent of such motionis of course only small, being only such as required to bring anyparticular point into exact register after it has been adjusted as nearas possible by the movement of the carriage.

The presser roller or rollers, as at D, Fig. 1, are mounted, as shown,so as to be capable of a lateral movement to correspond with the lateralmovement of the paper-roller in its frame when necessary.

I claim- I 1. In a type-writing machine, the combination with thepaper-roller, the paper-roller spindle, the fixed knobs at theextremities of the said spindle,and the paper-carriage frame, of arotary sleeve for longitudinally adjusting the paper-roller, said sleeveforming the bearing of the roller-spindle at one end, substantially asdescribed for the purpose specified.

2. In a type-writing machine, the combination with the paper-roller, thepaper-roller spindle, the fixed knobs at the extremities of saidspindle, and paper-carriage frame, of an externally-screw-threadedrotary sleeve form ing the bearing of the roller-spindle at one end andaccurately fitting between one end of the said roller and the knob fixedto that end of the said spindle, substantially as described for thepurpose specified.

3. In a type-writing machine, the combination with the paper-roller, thepaper-roller spindle, the fixed knobs at the extremities of the saidspindle,and the paper-carriage frame, of an externally-screw-threadedrotary sleeve forming the bearing of the said spindle at one end, andaccurately fitting between one end of the said roller and the knob fixedto that end of the spindle, and a fixed nut on the frame of thepaper-carriage, which nut forms a bearing in which the said sleeve canturn to carry the paper-roller longitudinally in its carriage in eitherdirection, substantially as described for the purpose specified.

4. In a type-writing machine, the combination with the paper-roller, thepaper-roller spindle, the fixed knobs at the extremities of the saidspindle,and the paper-carriage frame, of an eXt-ernally-serew-threadedsleeve forming the bearing of the said spindle at one end, andaccurately fitting between one end of the said roller and the knob fixedto that end of the spindle, a fixed nut on the frame of thepaper-carriage, which nut forms a bearing in which said screw-threadedsleeve can turn to carry the paper-roller longitudinally in its carriageineither direction, a head fixed to said sleeve for turning the same, anextension on the spindle at the opposite end of the paper-roller, apresser-roller and means for enabling the presser-roller to movelaterally in its hearings to a limited extent, substantially asdescribed for the purpose specified.

In testimony whereof I have hereunto set my hand, in presence of twosubscribing Witnesses, this 12th day of July, 1898.

WVILLIAM S. CRAIG.

Witnesses:

FRED C. HARRIS, vVALTER J. SKERTEN.

